Gage-bar for buttonhole-cutters.



No. 674,828. Patented May 2|, 190i. F. H. FARNHAM.

GAGE BAR FOR BUTTONHOLE GUTTERS.

(Application filed May 26, 1900.}

(No Model.)

UNITED STATES PATENT OFFICE FRANK I-I. FARNHAM, OF HARTFORD,OONNECTICU'1.

GAGE-BAR FOR BUTTONHOLE-CUTTERS.

SPECIFICATION forming part of Letters Patent N 0. 674,828, dated May 21, 1901.

Application filed May 26, 1900. Serial No. 18,132. (No model.)

To all whmn it may concern;

Be it known that I, FRANK H. FARNHAM, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Gage-Bars for Buttonhole-Cutters; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had .to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates tothe improvement in gage-bars for buttonhole-cutters.

The main object of my invention is that the consecutive cutting of a number of buttonholes may be facilitated by the adjustable gage-bar, which consists of a rod which is marked off with any desired linear measurements and is adjustable through the upper blade of the buttonhole-cutter by means of a set-screw. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of a pair of bu ttonhole-shears with my improved gage-bar attached thereto. Fig. 2 is aperspective view of myimproved gage-bar and adjusting-screw detached.

A and B represent the blades of the buttonhole-scissors, pivoted at B and arranged with their cutting ends CL and b similar to scissors for cutting buttonholes and terminating in the accustomed bows or handles A and B.

In the blade B a serrated cam or lever O is fixed to a center pin, provided with a screwnut D, through which said cam C can easily be turned into any desired position. On the other blade A, nearly opposite the turningpoint of the cam C, a projecting pin E is attached. It will be seen that the length of the hole or cut will therefore depend upon the position of the cam O and the serrated part or tooth against which the projecting pin E will come in contact when the blades of the scissors are closed.

The blade A has marked on its side the scale or measure F to enable the size of the buttonholes to be cut all the same.

The blade B has passing therethrough an adjustable gage bar or rod G, which is marked off with any desired linear measurements and which occupies a transverse orifice g in the blade B and is retained to any specific adjustment by means of a set-screw H. The end of said gage bar or rod G is provided with a crescent-shaped spur I, which enables accurate application to each last buttonhole in succession, and any desired uniform distancing of consecutive buttonholes may be facilitated.

This completes the construction of the device, whose operation is as follows: The cam C is set in the desired position to agree with the scale F, so that the length of the buttonhole or cut will be readily seen and that the length of each buttonhole cut will therefore depend upon the position of the cam C and scale F. After the cam has been set to agree with the measure F the first buttonhole is out, then the adjustable gage bar or rod G is adjusted to the desired width the buttonholes are to be apart, and the crescent-shaped spur is then inserted in the first buttonhole and the next out can be easily determined.

Having described my invention, what I claim is- In a buttonhole-cutter, the adjustable gagebar, having at one end a downwardly-directed spur, for insertion in a buttonhole, in combination with the blade having a hole through which the gage is adjustable transversely,and means for securing the gage in the adjusted position, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK H. FARNI-IAM.

Witnesses:

H. L. OoeswELL, EDWARD L. SNYDER. 

